ColoradoKote

Precision Cerakote ceramic coatings for aerospace, defense, and industrial components.

Method

Three Stages of Conversion Coating

Precise chemistry control at every step ensures uniform oxide formation and consistent corrosion protection across every lot.

Cleaning
Multi-Stage Surface Decontamination

Parts move through alkaline cleaning and acid deoxidizing to remove oils, oxides, and handling contaminants. Rinse water conductivity is verified below 10 microsiemens per centimeter between each step to prevent cross-contamination of the conversion bath.

Cerakote spray application wide angle at ColoradoKote
Immersion
Controlled Chemical Reaction

Parts are immersed in MIL-DTL-5541 conversion solution at 70-90 degrees F for 2-5 minutes. Solution concentration is monitored daily through titration. Temperature is held within 5 degrees F of specification to ensure uniform oxide layer formation.

Technician in sandblasting booth at ColoradoKote
Rinse
Deionized Water Rinse and Inspection

Multi-stage deionized water rinses remove all residual chemistry. Visual inspection confirms uniform coating color and coverage. Coating weight is measured at 40-100 mg per square foot to verify specification compliance before release.

Ultrasonic cleaning tank at ColoradoKote
Multi-part Cerakote coating setup at ColoradoKote
Chemical conversion coating process icon

The Chemical Conversion Coating Process

Chemical conversion coatings create a thin oxide layer on aluminum that improves corrosion resistance and promotes adhesion for subsequent coatings. ColoradoKote processes Type I and Type II formulations under AS9100 protocols with full solution monitoring and lot traceability.

Results

What Our Conversion Coating Delivers

Process parameters are monitored, recorded, and traceable to each lot for complete quality documentation.

168+
Hours Salt Spray Resistance

Type I Class 1A conversion coating delivers 168+ hours of salt spray resistance per ASTM B117. The protective oxide barrier guards against moisture, salt spray, and galvanic contact on aluminum alloys including 2024, 6061, and 7075.

Before and after Cerakote coating comparison
100%
Full Lot Traceability

Solution concentration, temperature logs, immersion times, and visual inspection results are recorded and traceable to each lot number. Your Certificate of Conformance contains all process parameters and coating weight measurements.

<1µm
Coating Thickness

Conversion coating forms at under 1 micron thickness, creating zero dimensional change to machined parts. Thread fits, bearing surfaces, and mating components remain unaffected while gaining corrosion protection and enhanced coating adhesion.

Cerakote thickness measurement at ColoradoKote

Frequently Asked Questions

Find answers about our coating processes and technical capabilities

Can you create consistent OEM brand colors for aerospace applications?

Yes. OEM brand colors for aircraft interiors, avionics housings, and equipment panels require documented, repeatable color standards. We capture the target color by spectrophotometer, develop the Cerakote match to Delta E 1.5, and lock the formulation and process parameters into our AS9100 system. Every subsequent order is verified against the original standard. This ensures your brand color is consistent across parts, programs, and years.

Can Cerakote color survive direct contact with agricultural chemicals?

Yes. Fertilizers, herbicides, and pesticides contain aggressive chemical compounds that attack conventional paint and powder coat finishes. Cerakote's ceramic-polymer chemistry resists this chemical attack while maintaining color stability. ColoradoKote verifies color hold through chemical exposure as part of our quality process. For sprayer components and chemical application equipment, Cerakote provides both chemical protection and lasting color identification that conventional coatings cannot maintain in agricultural chemical environments.

How does sandblasting prepare additive manufacturing parts for coating?

AM parts require specialized blast parameters due to their inherent surface roughness and often delicate geometries. We blast SLS, MJF, and metal AM parts at 40-60 PSI, which reduces surface roughness from Ra 8-15 micrometers toward a more uniform profile without damaging lattice structures or thin walls. This controlled preparation is the foundation for Cerakote to reduce final surface roughness below 3 micrometers while adding corrosion and wear protection.

Why is Cerakote's thin film build important for defense electronics housings?

Defense electronics housings require coatings that protect against corrosion and field conditions without altering dimensions on mating surfaces, EMI gasket channels, and connector interfaces. Cerakote's 0.5 to 2 mil film build maintains these critical tolerances where powder coat's 4 to 6 mils would require masking or post-machining. Less coating mass also reduces weight on man-portable electronics and UAV-mounted systems.

Can ultrasonic cleaning remove marine biological deposits from hardware?

Yes. Biofouling residue, salt crystal deposits, and marine corrosion products are effectively removed by ultrasonic cavitation combined with appropriate cleaning solution chemistry. The cavitation action breaks down biological films and mineralized deposits that resist manual scrubbing and solvent cleaning. For marine hardware being recoated, complete removal of biological and salt contamination is critical for coating adhesion and long-term corrosion protection in continued marine service.

Ready for Conversion Coating

Provide your aluminum part specifications and required MIL-DTL compliance level. Receive a quote with processing details and lead time.